- Polycrystalline Microstructure: Aggregated nano-scale diamond crystallites renew cutting edges through controlled micro-fracture at nano-crystalline boundaries.
- Excellent Self-Sharpening Ability: Continuously exposes fresh micro-edges to maintain stable cutting performance and consistent results.
- Finer Surface Finish: Produces shallower, more random micro-scratch patterns, helping achieve lower Ra values and a smoother texture.
- Stable and Efficient Polishing: Maintains consistent material removal rates over time, reducing total process time and variability compared to abrasives that dull.
- Low Subsurface Damage: Supports ultra-precision finishing where minimal thermal or mechanical damage is required.
- Wide Material Compatibility: Performs well on hard-brittle materials and also helps reduce loading on soft or sticky metals during polishing.
Polycrystalline Diamond Paste
20+ Years Experience
Ultra-Precision Quality
Customized Solutions
Polycrystalline Diamond Paste represents a paradigm shift in ultra-precision finishing, engineered specifically to overcome the limitations of traditional monocrystalline abrasives. Formulated with detonation-synthesized, nano-crystalline diamond aggregates, each particle is a dynamic, self-renewing micro-tool. During polishing, the continuous microfracture of surface crystallites ensures a constant supply of fresh, sharp cutting edges. This proprietary self-sharpening action delivers an unmatched combination of low surface roughness (Ra), minimal subsurface damage, and exceptional process stability, making it the preferred solution for the most demanding materials and applications.
Features
Specifications
- Binder Type:
- Water-Based Polycrystalline Diamond Paste: Preferred for semiconductor, optical, and ceramic applications, offering fast cooling, easy cleaning, and no oily residue for clean processes.
- Oil-Based Polycrystalline Diamond Paste: Provides enhanced lubrication for soft or sticky metals, supports extended polishing time, and offers rust protection, with post-polishing cleaning recommended.
- Concentration Options:
- Light (10%–20%): Fine finishing and mirror polishing.
- Medium (20%–50%): General precision polishing.
- Heavy (50%–90%): High-efficiency material removal.
Diamond Polishing Paste Particle Size Chart
| USA Standard ANSI B74-1981 |
Japan Standard JIS6002-63 |
Chinese Standard JB/T17990-1790 |
Median Size (D50 μm) |
Monocrystalline (Appearance) |
Polycrystalline (Appearance) |
Degree of Polishing |
|---|---|---|---|---|---|---|
| 30–40 | 450# | W40 | 29–32 | Light Grey | – | Coarse polishing |
| 20–30 | 700# | W28 | 20–30 | Standard polishing | ||
| 12–22 | 1000# | W20 | 15.0–17.0 | |||
| 7–14 | 1300# | W14 | 9.1–10.5 | Black | ||
| 5–10 | 2000# | W10 | 6.5–7.3 | |||
| 4–8 | 3000# | W7 | 5.0–6.0 | Fine polishing | ||
| 3–6 | 4000# | W5 | 3.5–4.5 | |||
| 2–4 | 6000# | W3.5 | 2.2–2.6 | |||
| 1–3 | 10000# | W2.5 | 1.6–1.8 | Mirror finish polishing | ||
| 1–2 | 12000# | W1.5 | 1.1–1.3 | |||
| 0–1 | 15000# | W1.0 | 0.6–0.8 | |||
| 0–0.5 | 30000# | W0.5 | 0.2–0.3 |
Applications
Semiconductor
Used for ultra-precision surface finishing with minimal subsurface damage.
- Silicon wafer and compound semiconductor polishing
- CMP-related fine finishing processes
- Precision substrate planarisation
Optical & Optoelectronic
Applied where extremely low surface roughness and high optical quality are required.
- Optical glass and laser crystal polishing
- Sapphire and optical component finishing
- High-precision optoelectronic substrates
Ceramic Manufacturing
Designed for controlled polishing of hard and brittle ceramic materials with high surface quality demands.
- Advanced technical ceramics for precision components
- Ceramic coatings and functional layers finishing
- Low-damage surface refinement for tight tolerances
Mold & Die
Used as a pre-polishing or fine-polishing compound to improve surface uniformity.
- Mold steel pre-polishing
- Precision die cavity surface preparation
- Surface smoothing for high-quality tooling
Composite Materials
Applied in precision finishing of advanced composite and coated surfaces.
- CVD diamond and ceramic coatings
- Thermal spray and functional composite layers
- Surface levelling and defect reduction
Medical & Dental
Suitable for applications requiring high surface quality and biocompatibility.
- Dental ceramics and prosthetic components
- Medical device surface polishing
- Precision finishing of implant materials