Fabrication of miniature parts using nano-sized powders and an environmentally friendly binder through micro powder injection molding

被引：8

作者：

Rajabi, Javad ^{[1
]}

Zakaria, Hafizawati ^{[1
,2
]}

Muhamad, Norhamidi ^{[1
]}

Sulong, Abu Bakar ^{[1
]}

Fayyaz, Abdolali ^{[1
]}

机构：

[1] Univ Kebangsaan Malaysia, Dept Mech & Mat Engn, Fac Engn & Built Environm, Bangi 43600, Selangor, Malaysia

[2] Univ Malaysia Perlis, Sch Mechatron Engn, Program Mech Engn, Arau 02600, Perlis, Malaysia

来源：

MICROSYSTEM TECHNOLOGIES-MICRO-AND NANOSYSTEMS-INFORMATION STORAGE AND PROCESSING SYSTEMS | 2015年 / 21卷 / 05期

关键词：

WATER-SOLUBLE BINDER;

D O I：

10.1007/s00542-014-2272-y

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Component miniaturization is increasingly gaining importance in numerous microsystem technologies, including medical technology, biotechnology, and drive technology. In this study, two types of nano-sized powder, namely, metal (stainless steel 316L) and ceramic (yttria-stabilized zirconia), were used to fabricate miniature parts through micro powder injection molding. Micro parts were produced by mixing powders with a binder system, followed by injection, debinding, and sintering process. Partially water-soluble binder system with surfactant addition was used to mix with either stainless steel 316L or yttria-stabilized zirconia nanopowder to form feedstock to avoid the agglomeration of fine powder and environmentally hazardous organic binder. The polyethylene glycol loss in water was observed after a rapid removal period in the first 60 min of immersion for the micro parts. Approximately 99 % of the polymethyl methacrylate binder was removed after pyrolysis at 450 A degrees C for 2.5 h. Sintered ceramic and metallic parts showed a relative density that is approximately 97 % of theoretical density and free of defects. Hardness of approximately 221 and 1,200 Hv was achieved for the fabricated micro parts using stainless steel 316L and yttria-stabilized zirconia powders, respectively.

引用

页码：1131 / 1136

页数：6

共 37 条

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