PLDM – Polycrystalline Diamond Powder

20+ Years Experience Consistent Batch Quality Customized Solutions

Product Overview

PLDM is a polycrystalline diamond powder developed for precision lapping and polishing applications requiring high material removal efficiency together with controlled surface quality. Its polycrystalline structure consists of fine, randomly oriented diamond crystallites, providing multiple cutting points and progressive micro-fracturing during use. This self-renewing abrasive behavior supports stable removal rates and consistent finishing of sapphire, advanced ceramics, semiconductor-related materials and optical components.

Features

Polycrystalline Microstructure: Fine, randomly oriented diamond crystallites provide multiple active cutting points.
Progressive Micro-Fracturing: Generates new abrasive edges during use and supports sustained cutting efficiency.
Multi-Contact Particle Surface: Promotes efficient and relatively uniform material removal during lapping and polishing.
Self-Renewing Abrasive Behavior: Helps maintain stable removal performance throughout extended processing cycles.
Controlled Fine Particle Sizes: Supports precision finishing where removal rate and surface quality must be balanced.

Specifications

Diamond Type	Polycrystalline Synthetic Diamond
Product Series	Specialty Micron Diamond Powder
Grade	PLDM
Structure	Polycrystalline aggregate of fine diamond crystallites
Fracture Behavior	Progressive micro-fracturing / self-renewing
Particle Surface	Rough, multi-edge morphology
Selection Focus	High removal efficiency, self-sharpening and surface control
Typical Processes	Precision Lapping / Polishing / Back Thinning

Model	D10 (µm)	D50 (µm)	D95 (µm)	Application
PLDM 1/8	≥0.06	0.10–0.14	≤0.21	End surface polishing of optical crystal, ultra-hard ceramic, wafer substrate, and metal.
PLDM 1/4	≥0.11	0.20–0.25	≤0.40
PLDM 0-1	≥0.40	0.48–0.55	≤0.72
PLDM 0-2	≥0.70	0.90–1.10	≤1.50
PLDM 2-4	≥1.80	2.70–3.00	≤4.50	Lapping, rough polishing, and back thinning of sapphire and wafer substrate.
PLDM 3-6	≥2.80	4.00–4.40	≤7.00
PLDM 4-8	≥4.00	5.50–6.00	≤8.60
PLDM 5-9	≥4.70	6.30–7.00	≤10.00
PLDM 5-12	≥5.20	7.20–7.80	≤13.00