SYNTHESIS OF AIN BY EXOTHERMIC NITRIDATION REACTION OF AI ALLOYS THROUGH DIFFUSION CHANNEL OF NITROGEN

AI合金的氮扩散通道放热氮化反应合成AlN

• 批准号: 05453076
• 负责人: KOMEYA Katsutoshi
• 金额: $ 3.9万
• 依托单位: YOKOHAMA NATIONAL UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (B)
• 财政年份: 1993
• 资助国家: 日本
• 起止时间: 1993 至 1994
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-05453076/
• 关键词: Aluminum nitride; Al alloy; Self-propagating high-temperature synthesis; Nitridation reaction; Lithium; 自己発熱反応

Direct nitridation of A1 alloys such as Al-Y,Al-Ca and Al-Li was investigated with particular emphasis on the alloy composition, reaction temperature and reaction time. Although no noticeable reaction was seen for A1-Y alloy and pure Al, the alloys of Al-2.3wt%Li, A1-5.0wt% Li and Al-5.0wt%Ca converted completely to AlN in very short soaking time at 1000ﾟC,and Al-1.0wt%Li and 0.5wt%Li showed conversion ratios of 28.2 and 12.6%at 1000ﾟC for 5h, respectively. The reaction using Al-2.3wt%Li alloy could be divided into three categories : namely, surface nitridation, volume nitridation and breakaway nitridation. In the breakaway nitridation, the product greatly expanded to show no trace of the original form. The inner part consisted of rod-like, plate-like and spherical AlN grains. The size increased with increasing reaction temperature. In A1-1.0wt%Li and A1-0.5wt%Li, the exothermic reaction was not observed during nitridation, which is quite different from the case of higher Li content. The phase in the product from the AlN-1.0wt%Li alloy was composed of AlN,whereas those from AlN-0.5wt%Li was AlN and alpha-A1203. The nitridation mechanism of A1 alloys such as Al-Li and Al-Ca was estimated to be based on the nitrogen diffusion through open channel formed by Li migration to the surface.

A1合金（例如Al-Y，Al-Ca和Li）的直接氮化物对合金组成E和反应时间进行了重点，尽管A1-Yalloy和Pure Al，Al-2.3wt％的合金是明显的反应。 Li，A1-5.0WT％Li和Al-5.0wt％CA在1000°C的非常浸泡的时间转换为Aln，Al-1.0wt％Li和0.5wt％Li显示为28.2和12.6％的转化率1000°C的5H，使用Al-2.3wt％Li合金可以分为三类：二氮，硝化体积和硝化剂部分由杆状，板状和spyrital组成。 。由Li迁移到表面形成。

项目成果

K.Komeya: "Synthesis of AlN by Direct Nitridation of Al Alloys" J.Ceram. Soc. Japan. 101. 1319-23 (1993)

K.Komeya：“通过铝合金直接氮化合成 AlN”J.Ceram。

米屋勝利: "窒化物セラミックスの低コスト化について" ニューセラミックス. 8巻. 27-31 (1995)

米谷克敏：“论氮化物陶瓷的成本降低”《新陶瓷》卷 8. 27-31 (1995)。

米屋勝利: "セラミックデータブック" 工業製品技術協会, 31-226 (1993)

米谷胜俊：《陶瓷数据手册》工业产品技术协会，31-226（1993）

K.Komeya.: "Functions and Recent Progress of Aluminum Nitride" J.Mater.Sci.Soc.Japan. 31. 147-49 (1995)

K.Komeya.：“氮化铝的功能和最新进展”J.Mater.Sci.Soc.Japan。

K.Komeya, T.Meguro et al.: "Synthesis of AlN by Direct Nitridation of Al Alloys" J.ceram.Soc.Japan. 101. 1391-23 (1993)

K.Komeya、T.Meguro 等人：“通过铝合金直接氮化合成 AlN”J.ceram.Soc.Japan。