Publications

Browse PTI technical publications

Find content by subject, editorial format, or publication date

Find technical publications by the powder behavior, material property, process, or measurement you are working with. You can also browse the latest releases, choose an editorial format, or open the complete publication catalog.

Publications

Browse PTI technical publications

Find content by subject, editorial format, or publication date

Find technical publications by the powder behavior, material property, process, or measurement you are working with. You can also browse the latest releases, choose an editorial format, or open the complete publication catalog.

Latest publications Browse by Subject Feature Articles Technical Briefs Insights Know How All Publications
Browse publications by technical subject

Browse by Subject

Find publications by powder behavior, material property, process, or measurement topic.

Latest PTI publications

Latest Publications

See the newest PTI publications first, regardless of technical subject or editorial format.

Browse publications by editorial format

Browse by Format

Choose Feature Articles, Insights, or Know How according to the depth and type of content you need.

Browse all PTI publications

All Publications

Open the complete PTI publication catalog, newest first, and continue loading older content as needed.

Latest from PTI

Recently published

The four newest PTI publications appear here automatically, regardless of subject or editorial format.

  • X-ray micro-CT pore network diagram showing open and closed porosity in a powder particle compared to gas pycnometry and BET surface area
    15 August 2026

    X-ray Micro-CT for Powder Pore Networks: What It Adds Beyond Gas Pycnometry and BET Surface Area

    Gas pycnometry and BET surface area each report a single number. X-ray micro-CT builds a three-dimensional map of the pore network, showing connectivity, tortuosity, and closed porosity that single-value tests cannot resolve, within real resolution and sample-size limits.

    Insights

  • SAE AIR7359 illustration showing controlled and non-controlled metal powder feedstock properties in additive manufacturing
    8 August 2026

    SAE AIR7359: Why Some Metal Powder Feedstock Properties Are Left Out of AM Specifications

    AIR7359 explains why AMS-AM metal powder feedstock specifications leave certain properties uncontrolled, citing limited applicability and immature standardized inspection methods, and what that gap means for aerospace AM qualification programs.

    Insights

  • Two stainless steel powder hoppers showing contrasting mass flow and funnel flow behavior.
    8 August 2026

    Powder Spreading in Powder Bed Fusion: What Recoater Interaction Reveals About Layer Defects

    Powder spreading in powder bed fusion is a recoater-powder interaction shaped by cohesion, particle size distribution, and particle shape. This article maps streaking, short-feeding, and layer non-uniformity back to their underlying mechanisms and separates powder-driven causes from blade wear and spreading speed.

    Feature Article

  • Technical illustration of dynamic powder testing, showing a rotating blade moving through a powder bed to compare confined flow energy, low-confinement specific energy, and aeration-sensitive behavior.
    1 August 2026

    Dynamic and Aerated Powder Testing: What Flow Energy Adds Beyond the Shear Cell and Hausner Ratio

    Dynamic and aerated powder testing measures basic flow energy and specific energy to fill the gap between shear cell consolidation data and Hausner ratio screening, particularly for fluidized processing and rapid-refill feeding.

    Know How

Browse by Subject

Find PTI content by technical subject

Choose the powder behavior, material property, process, or measurement behind the question. Each subject opens the corresponding PTI publication category, bringing related technical publications together in one place. Industries are intentionally omitted because PTI already provides dedicated industry pages.

Flow & bulk behavior

FlowabilitySegregationDustinessCakingElectrostatic EffectsMoisture SensitivityShearCohesionPermeabilityPacking Density

Particle & surface behavior

AgglomerationAttritionAbrasionWearAdhesionSurface EnergyDispersionRheologyPorosityThermal PropertiesParticle Size Distribution

Processing & handling

Mixing TechnologyHoppersConveyingCompactionCoatingSilo StorageEncapsulation TechniquesSpray DryingMilling

Characterization & analysis

Bulk Solids CharacterizationParticle Size TestingAnalytical Techniques and MethodsChemical Composition AnalysisMicroscopy

Browse by format

Choose the depth and type of content

Feature Articles, Insights, and Know How are editorial formats within PTI publications. They are not separate technical destinations.

Feature Articles

Long-form technical analysis built around a defined engineering question, comparison, mechanism, process, or application.

Technical Briefs

Concise, practical explanations of focused powder and particle technology questions, mechanisms, measurement issues, and process challenges.

Insights

Focused interpretation of a study, method comparison, process result, standard, or emerging technical development.

Know How

Practical technical guides that go deeper into measurement, interpretation, equipment, and powder-behavior decisions.

Feature Articles

Long-form technical analysis

Recent Feature Articles examine a defined engineering question in greater depth, connecting mechanisms, measurements, process context, and interpretation where the subject requires it.

  • Refractory alloy powders for rocket propulsion, photorealistic lab scene with metal powder and AM test coupon
    14 February 2026

    Concentrated Refractory Alloy Powders for Rocket Propulsion

    Concentrated refractory alloy powders for rocket propulsion only create value when you [...]

    Feature Article

  • Powder discharging into a receiving hopper with a small dust cloud at the transfer point, illustrating why universal dust explosivity criteria depend on dispersion conditions.
    7 February 2026

    The Search for Universal Dust Explosivity Criteria

    Universal dust explosivity criteria fail because explosibility depends on dispersion, turbulence, ignition, [...]

    Feature Article

  • Rare earth powders in two sample jars, magnet powder and oxide powder, on a lab bench with sieves, a milling jar, and a pinned world map behind.
    31 January 2026

    Rare Earth Powders and the New Strategic Material Order

    Rare earth powders now sit in the control loop of modern technology. [...]

    Feature Article

  • Technician uses a riffle splitter to divide silicon anode powder into labelled sample jars on a lab bench.
    24 January 2026

    Silicon Anode Powder: The Manufacturing Bottleneck Behind Next Gen Battery Gains

    Silicon anode powder fails in production for predictable reasons. Particle morphology, oxide [...]

    Feature Article

Technical Briefs

Concise answers to focused technical questions

Recent Technical Briefs provide concise, practical explanations of focused powder and particle technology questions, covering specific mechanisms, measurement issues, processing challenges, and interpretation problems.

Nothing Found

Insights

Focused technical interpretation

Recent Insights examine a study, method, process result, standard, or emerging technical development in a tighter editorial format.

  • Deaeration lag in powders, hopper cutaway showing aerated bed with trapped air bubbles versus compacted bed, causing pause and surge discharge rate
    14 February 2026

    Deaeration lag, why “easy flowing” powders still surge

    Deaeration lag in powders creates a timing mismatch between how fast your [...]

    Insights

  • Permeability collapse in hopper discharge shown in a two-panel hopper diagram, with a pressure drop and rathole in Panel A, then rathole collapse, entrained air, and a discharge surge in Panel B.
    7 February 2026

    Permeability Collapse in Hopper Discharge Causes “Random” Ratholes and Sudden Flooding

    Permeability collapse in hopper discharge often triggers instability before cohesion becomes the [...]

    Insights

  • Wall friction drift in hoppers, shown as clean wall flow versus film driven ratholing.
    31 January 2026

    Wall Friction Drift in Hoppers: Why Discharge Degrades Over Time

    Many hopper issues are boundary-limited. Wall friction drifts upward over time, so [...]

    Insights

  • Illustration showing water activity in powders versus moisture content, with internal water inside particles and surface water forming liquid bridges at particle contacts.
    24 January 2026

    Water Activity in Powders: Why Moisture Content Misleads in line drifts during production

    Water activity in powders predicts caking, sticking, and flow loss better than moisture [...]

    Insights

Know How

Practical technical guidance

Recent Know How publications focus on practical measurement, method selection, interpretation, equipment, and technically useful working guidance.

Nothing Found

All Publications

The complete PTI publication catalog

Browse all published PTI content, newest first. Use the subject index above when you know the technical topic, or the structured PTI hubs when you want a guided route through a problem, property, measurement, process area, or industry.

  • Powder containment performance testing during a powder transfer, with an operator handling a liner at a stainless steel connection.
    3 January 2026

    Powder Containment Performance Testing: How to Specify, Measure, and Improve Containment

    Powder containment performance testing turns “we think it’s contained” into measured proof. [...]

    Know How

  • Core-shell and coated powders on a lab bench in sample vials, prepared for surface analysis and sintering studies.
    3 January 2026

    Core-Shell and Coated Powders for Controlled Interparticle Chemistry

    Core-shell and coated powders let you engineer surface chemistry, improve handling stability, [...]

    Feature Article

  • Welding fumes in powder plants captured at the arc with local exhaust ventilation during maintenance welding.
    3 January 2026

    Welding Fumes in Powder Plants: The Hidden Contamination Risk During Maintenance and Hot Work

    Welding fumes in powder plants now sit in a tighter EU compliance [...]

    Insights

  • Industrial spice milling and blending line with airborne powder and spice bowls, showing how hidden additives in food supply chains can enter during upstream processing.
    27 December 2025

    The Hidden Additives in Food Supply Chains Consumers Never See

    Hidden additives in food supply chains often enter as processing aids at [...]

    Feature Article

  • Powder permeability dosing instability in a hopper feeding a loss in weight feeder.
    27 December 2025

    Powder Permeability, The Hidden Cause of Dosing Instability

    Powder permeability dosing instability often starts with trapped air. Low permeability traps [...]

    Insights

  • Winter powder quality control sampling graphite to prevent flow issues during the Christmas rush
    20 December 2025

    Graphite Under the Tree

    In the Holiday rush, winter humidity shifts and faster throughput can break [...]

    Feature Article

  • EU plastic pellet loss regulation, spill containment and vacuum recovery at a pellet transfer point in a bulk handling area.
    20 December 2025

    EU Plastic Pellet Loss Regulation: Bulk Plant Compliance

    EU plastic pellet loss regulation (EU) 2025/2365 makes spill prevention and documented [...]

    Insights

  • Triboelectric charging in powders at a pneumatic conveying transfer point, showing fine powder flow near grounded stainless steel piping and an electrostatic field sensor.
    13 December 2025

    Triboelectric Charging in Powders: The science, failure modes, and industrial controls

    Triboelectric charging forms when powders contact and separate, creating a shifting charge [...]

    Feature Article

  • Engineer in a powder processing plant reviewing a tablet that visualizes control banding for powders near a ventilated big bag discharge station.
    13 December 2025

    Control banding for powders: making incomplete data actionable

    Control banding for powders turns incomplete hazard data into a clear exposure [...]

    Insights

  • Smart powder processing in additive manufacturing shown as a metal powder bed fusion machine with active laser and sensor data overlay.
    6 December 2025

    Additive Manufacturing Integration and the Rise of Smart Powder Processing

    Smart powder processing in additive manufacturing links engineered powders, real-time sensor data, [...]

    Feature Article

  • titanium dioxide powder classification shown by a tray of white pigment powder with safety documentation
    6 December 2025

    Titanium dioxide powder classification in 2025: what changed, what did not

    titanium dioxide powder classification is shifting again in 2025. An EU court [...]

    Insights

  • Operator emptying a powder bag into an enclosed dump station, managing powder dustiness with local exhaust ventilation.
    30 November 2025

    Managing Powder Dustiness in Industrial Plants

    Powder dustiness is a measurable property, not a housekeeping detail. When you [...]

    Know How

Testing support

Need the measurement, not just the article?

If the publications help narrow the technical question but the decision still depends on measured powder behavior, Delft Solids Solutions can help define an appropriate test plan and interpret the result. Explore Delft Solids Solutions testing support →

Delft Solids Solutions logo