Development of SiC/(W, Ti)C gradient ceramic nozzle materials for sand blasting surface treatments

被引：11

作者：

Deng Jianxin ^{[1
]}

Liu Lili ^{[1
]}

Li Jianfeng ^{[1
]}

Ding Mingwei ^{[1
]}

Yang Xuefeng ^{[1
]}

机构：

[1] Shandong Univ, Dept Mech Engn, Jinan 250061, Shandong, Peoples R China

来源：

INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS | 2007年 / 25卷 / 02期

基金：

高等学校博士学科点专项科研基金; 中国国家自然科学基金;

关键词：

nozzles; ceramic materials; gradient materials; SiC;

D O I：

10.1016/j.ijrmhm.2006.03.006

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A model for the design of gradient ceramic nozzle materials is presented. The purpose is to reduce the tensile stress at the entry region of the nozzle during sand blasting processes. A (W, Ti)C/SiC gradient ceramic nozzle material, GN-1, was accordingly synthesized by hot pressing according to the design result. The residual thermal stress of the (W, Ti)C/SiC gradient ceramic nozzle in the fabricating process was calculated by means of the finite element method (FEM). The design of composition distribution of the gradient ceramic nozzle was carried out with the aim of partial relaxation of the stress resulting from external loadings by residual thermal stress. The erosion behavior of the gradient ceramic nozzle was investigated in comparison with the common ceramic nozzles. It is suggested that gradient structure in ceramic nozzles is an effective way to improve the erosion wear resistance over the common ceramic nozzles. (c) 2006 Elsevier Ltd. All rights reserved.

引用

页码：130 / 137

页数：8

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