金屬粉體射出成形SUS-316L零件添加矽改質之研究

A Study For Silicon Dopant in MIM’s SUS 316L part

張學祖(Hsueh-Tzu Chang)

指導教授 ： 王玉瑞

國立臺北科技大學/工程學院/資源工程研究所/碩士(2013年)

摘要

本研究目標為提升金屬粉體射出成形技術所製作之SUS-316L產品的密度及硬度，以改善其在外觀與機構應用上的廣泛性。
SUS- 316L粉體中分別在三種樣品添加0, 2.5, 及5 wt%的矽，並在1275, 1300以及1325?C三種燒成溫度進行燒結。樣品性質的評價以密度、硬度進行巨觀分析為依據，並針對金相觀察並採用XRD與EDS輔助，分析金屬相的變化。結果顯示，添加了矽元素的SUS-316L燒結後樣品之密度、硬度均有效提升，並隨燒結溫度增加而提升；透過金相分析，矽添加於SUS-316L發現微結構的變化，在γ相晶界上有σ相均勻析出，形成析出與散佈硬化的現象，有助於SUS-316L在機械性質的提升進而廣泛應用。

關鍵字

金屬粉體射出成形 ； 燒結 ； 不鏽鋼 ； 矽 ； 金相 ； XRD ； EDS

並列摘要

The study was to enhance density and hardness of the MIMs’ SUS-316L products (Metal-powder Injection Molding) to improve its appearance and mechanical function for applications. In the SUS-316L powder are added silicon content of 0, 2.5, and 5 wt%, and setting 1275, 1300 and 1325?C for sintering. After sintering, these samples measure density and hardness for mechanical functions. Metallographic analysis will use XRD and EDS to assist phase observation. The results showed that silicon dopant enhanced density and hardness of SUS-316L samples with increasing sintering temperature; through metallographic analysis, silicon dopant to SUS-316L found microstructure changes: σ phase was uniformly precipitate on the γ phase grain boundary. The phase can helps SUS-316L improved mechanical properties for more application.

並列關鍵字

MIM ； Sintering ； Stainless steel ； Silicon ； metallographic ； XRD ； EDS

參考文獻

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