Mn-鋼의 燒結機構에 關한 硏究(I) = Studies on the mechanism of Sintered manganese steel

다국어 초록 (Multilingual Abstract)

The studies for the alloying of manganese to iron by powder metallurgical method presents some difficulties. Observations are made in this paper on the alloying of manganese to iron on the alloying process of Fe-Mn-C ternary system during sintering. The results obtained wear as follows;
1) Alloying structures of iron-manganese are partially obtained by sintering the compacts from mixtures of iron and 10% manganese powder at 1000-1000℃ in hydrogen an addition of carbon to this mixtures improves the alloying between iron and manganese; by adding more than 0.8% carbon to these mixtures, homogeneous structures are obtained at sintering temperature of 1100℃, the degrees of homogenization of alloying wear examined by photo spectro analyzer.
2) Following three mechanisms are proposed for the sintering of Fe-Mn-C ternary system.
ⅰ) Alloying of manganese directly to iron
ⅱ) Alloying of manganese to iron-carbon alloy
ⅲ) Alloying of manganese-carbon alloy or manganese carbide to iron(at high carbon contact)
In the case of sintering the compacts containing manganese oxide which is not readily reduced, an application of the alloying process (*ⅲ) may be effective.

목차 (Table of Contents)

• 一. 序 論
• 1-1. 序 言
• 1-2. 本硏究의 目的과 內容
• 二. 燒結機構에 關한 實驗方法 및 內容
• 2-1. 燒結溫度 燒結時間
• 2-2. 燒結雰圍氣
• 2-2-1. 燒結雰圍氣의 種類
• 2-2-2. 燒結雰圍氣의 純度, 특히 H2 Gas의 露点
• 2-3. Mn粉의 粒度
• 2-4. 添加元素
• 2-4-1. C의 添加
• 2-4-2. 其他의 添加物
• 2-5. 燒結過程中에 있어서 合金化와 같이 일어나는 燒結現象
• 2-5-1. 熱膨脹計에 의한 燒結現象의 觀察
• 2-5-1-1. 燒結體 熱膨脹 測定裝置에 依한 測定
• 2-5-1-2. 實驗結果 및 考察
• 2-5-2. Fe-Mn, 2元素 燒結體에 있어서의 燒結機構
• 2-5-3. Fe-Mn-C, 3元素 燒結體에 있어서의 燒結機構
• 2-5-3-1. 合金化 過程을 나타내는 2, 3의 모델 實驗
• 2-5-3-2. Fe-Mn-C 3元素의 合金化 機構
• 2-5-3-3. Fe-Mn-C 3元素의 燒結機構
• 2-5-4. 粉末表面의 難還元性 酸化皮膜의 除去方法과 이들 粉末을 包含한 鐵系 壓粉體의 燒結方法
• 三. 考察 및 結果