Boron Carbide Metallographic Sample Preparation of Porosity and Crack Analysis

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Material background

Boron carbide, also known as black diamond, has a Mohs hardness of 9.3. It is the third hardest known substance after diamond, boron nitride, and is used in tank armor, bulletproof vests, and many industrial applications. Due to its high melting point, boron carbide itself is not easy to cast into artificial products, but it can be processed into simple shapes by melting powder at high temperature. It is used for grinding, grinding, drilling and polishing of hard materials such as cemented carbide and gemstones.
Sample preparation difficulty: The hardness is very high, and excellent edge protection fillers are required for inlay.

Customer goal: Observe pores and cracks.

Graphs and Analysis

200X Boron Carbide Small Pores 200X Boron Carbide Micro-cracks

*The above pictures may not be reproduced without permission, otherwise legal liability will be pursued.

Solution

In order to maintain the same grinding rate as much as possible, we chose MW002 hot mounting resin containing glass fiber filler to mount the material according to the hardness of the boron carbide material.

Mounting:

Penetration-20 fully automatic double-station hot mounting machine MW002 edge-preserving hot mounting resin mounting sample

Grinding & Polishing：

Smoothneer-6 Metallographic Automatic Grinding and Polishing Machine GD-Dia Diamond Magnetic Grinding Disc

The step of grinding & polishing		Coarse Grinding	Fine Grinding	Diamond Medium Polishing	Diamond Fine Polishing	Diamond Final Polishing
1	Surface	GD-Dia	GD-Dia	PCJ Polyester fabric	PCY Wool fabric	GD-PCR Flannel(short velvet)
2	Abrasive Granularity	9μm	9μm	9μm	3μm	1μm
3	Polishing/ Lubricant	DS001High performance polycrystalline diamond suspension	DS001High performance polycrystalline diamond suspension	DS001High performance polycrystalline diamond suspension	DS001High performance polycrystalline diamond suspension	DS001High performance polycrystalline diamond suspension
4	Pressure	35N	35N	30N	30N	25N
5	Rotation Speed	300	300	150	150	150
6	Time/min	3	4	3	3	3

The above recommended parameters are taken from: Preparation method of Φ30 mm ceramic sample with Φ250 mm working plate on automatic grinding and polishing machine Smoothneer-6.

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Customized service is provided for your material and demands

Truer has experience engineers in technology service and experts who has abundant sample preparation skills and can provide the customized service to you.We will provide the professional preparation skill and operating proposals also can install and debug on-site.Warranty is one year for the equipment and lifetime maintenance.The technical support online and skills training can be provided annual.

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400-099-7576
021-34386739
021-34320902
13472638080 Clara Xu
Third Floor,NO.299,Songqiu Road,Qingpu District,Shanghai,China

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