Development of Elcctrode Material for Plasma Cutting by Laser Furnace

激光炉等离子切割电极材料的研制

• 批准号: 07650835
• 负责人: KUSUMOTO Kazuomi
• 金额: $ 1.34万
• 依托单位: GUNMA UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1995
• 资助国家: 日本
• 起止时间: 1995 至 1996
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-07650835/
• 关键词: PLASMA CUTTING; ELECTRODE MATERIAL; SINTERING; レーザ; エアプラズマ切断

This study was carried out to develop the durable electrode materials for plasma cutting and was discussed the durability of electrode and its cosumption mechanism. It was attempted that the new type furnace introduced the laser beam apply to sintering the electrode materials for plasma cutting. In this method of the laser furnace, the high melting meterial such as hafnium or hafnium compound can be sintered.In this study, it is abvious that hafnium nitride powder is difficult to sintering compared with hafnium metal powder, and can be made of hafnium nitride from metal powder at 300W in laser power for 1.8ks. I think that the laser furnce method is useful to sintering or nitridizing of the high melting material in the future.Ir including 10-25wt% yttrium oxide electrode has a good erosion resistance compared with hafnium electrode of the widely used in today from the results of consumption test under the oxygen atmosphere until 200A in arc current. Especially, Ir-15wt%Y_2O_3 electrode shows about three times life-time compared with hafnium electrode under the oxidizing plasma arc at 25A.And the good erosion resistance is strongly depended on the formation of oxide layr acts as a good electron emitter.

为开发耐久性等离子切割电极材料，对电极的耐久性及其消耗机理进行了探讨。尝试了将激光束引入到等离子切割电极材料的烧结中。在本研究中，氮化铪粉末较金属铪粉末难烧结，可以在300 W激光功率下，1.8ks的时间内由金属粉末制备氮化铪粉末。我认为激光炉法对未来高熔点材料的烧结或氮化很有用。从氧气气氛下直至200 A电弧电流下的消耗测试结果来看，含有10-25wt%氧化钇的铱电极与当今广泛使用的铪电极相比具有良好的抗侵蚀性。在25 A的氧化等离子弧作用下，Ir-15wt%Y_2O_3电极的寿命是铪电极的3倍左右，其良好的耐腐蚀性能与氧化层的形成密切相关，氧化层是良好的电子发射体。

项目成果

楠元一臣: "酸化性プラズマアーク切断用Ir-Y_2O_3電極の消耗特性の検討" 高温学会誌. 22・5. 209-215 (1996)

Kazuomi Kusunoki：“氧化等离子弧切割用Ir-Y_2O_3电极的磨损特性研究”高温科学学会杂志22・5（1996）。

楠元一臣: "酸化性プラズマアーク切断用I_r-Y_2O_3電極の消耗特性の検討" 高温学会誌. 22・5. (1996)

Kazuomi Kusunoki：“氧化等离子弧切割用I_r-Y_2O_3电极的磨损特性研究”日本高温学会杂志22・5。

楠元一臣: "酸化性プラズマアーク切断用I_r-Y_2O_3電極の消耗特性の検討" 高温学会誌. 22・5. (1996)209-215

Kazuomi Kusunoki：“氧化等离子弧切割用I_r-Y_2O_3电极的磨损特性研究”日本高温学会杂志22・5（1996）209-215。

楠元一臣: "酸化性プラズマアーク切断用I_r-Y_2O_3電極の消耗特性に関する研究" 高温学会誌. 22・4. 178-184 (1996)

楠本一臣：“氧化等离子弧切割用I_r-Y_2O_3电极的磨损特性研究”，高温科学学会杂志22・4（1996年）。

Kazuomi KUSUMOTO: "Investigation of Consumptive Characteristics of Ir-Y_2O_3 Electrode for Oxidizing Plasma Cutting" HIGH TEMPERATURE SOCIETY OF JAPAN. 22-5. 209-215 (1996)

Kazuomi KUSUMOTO：“氧化等离子切割用 Ir-Y_2O_3 电极消耗特性的研究”日本高温学会。