Hardness Test for Zirconia Particles

Introduction

Fracture strength in a compression test is generally used in strength evaluations of fine particles such as various types of industrial raw materials. Recently, however, there have also been requests for evaluation techniques of the hardness of particles. As a test method, specimens for hardness evaluations are prepared by embedding the fine particles which are the object of measurement in resin and then polishing the specimen surface. This article introduces an example in which the hardness of zirconia powder was measured using a Shimadzu DUH™-211S dynamic ultra micro hardness tester. Zirconia powder is now used in a diverse range of products, beginning with materials for dental treatment, taking advantage of its characteristic of high hardness.

March 4, 2021 GMT