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RISS 인기검색어
- 검색키워드
- 저자 : 張學良 (검색결과 2 건)
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定電壓下 黃酸一蓚酸 混酸浴 中에서의 交流에 依한 알루미늄板의 陽極酸化
金敎秀,張學良 嶺南大學校 工業技術硏究所 1974 연구보고 Vol.2 No.1
混酸治 中에서 交流에 依한 20V 定電壓 下에서 알루미늄板을 陽極酸化시켜 生成한 酸化皮膜의 性質, 溶出한 Al量 및 coating ratio等을 液溫과 液의 濃度 變化에 따라 各 單獨浴을 使用하였을 경우를 相互 比較 檢討하였던 바 混酸治의 경우 50℃의 高溫에서도 黃酸 單獨浴의 경우보다 A1의 溶出量은 적고, 生成 酸化皮膜의 두께, 耐磨耗性 및 耐蝕性等 그 特性値는 좋았으며, 또한 修酸 單獨浴보다 耐磨耗性은 越等하게 좋으며, 酸化皮膜은 더 두껍게 生成되었다. The properties of aluminum oxide film formed, the amount of dissolved Al, etc. in the process of anodic oxidation of aluminum plate in H₂SO₄-H₂C₂O₄(4:1) mixed acid bath with the use of A.C. at constant voltage of 20V were compared with those obtained in either H₂SO₄or H₂C₂O₄simple acid bath under otherwise identical conditions. As a result, it was revealed, in the mixed acid bath, that 1) the amount of dissolved Al was smaller than that in H₂SO₄simple acid bath at various concentrations and temperature of the baths. It is indicative of the inhibiting effect H₂C₂O₄on the dissolution of Al: 2) the thickness, and abrasion and corrosion resistances of the film formed were thicker than and superior to those of the film obtain either in H₂SO₄or particularly in H₂C₂O₄simple acid bath: and 3) the film having the satisfactory characteristic properties was obtained even at high bath temperature of 50℃, and the decrease in the characteristic values of the film formed was gradual over 50℃. Thus, bath temperature can be easily controlled.
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張學良,金敎秀 영남대학교 공업기술연구소 1973 연구보고 Vol.1 No.1
黃酸 或은 修酸 單獨浴 中에서의 알루미늄板의 陽極酸化에 關한 特許 或은 硏究는 많이 發表되고 있다. 그러나, 이들의 混酸浴에 對하여서는 거의 發表가 없으므로 著者들은 이들 混酸浴 中에서 여러 條件下에서의 알루미늄板의 陽極酸化時 生成한 酸化皮膜의 性質, 溶出한 Al의 量 및 coating ratio 等을 浴溫 20∼35℃에서 各 單獨浴을 使用한 경우와 相互 比較 檢討하였던 바 그의 모든 點에서 單獨浴의 경우보다 그 成績이 좋았다. The properties of aluminun oxide film formed, the almount of dissolved Al, the coating ratio, etc, in the process of anodic oxidation of aluminum plate in a H₂SO₄-H₂C₂O₄mixed acid bath were compared with those obtained in either H₂SO₄or H₂C₂O₄simple bath. Consequently, in the mixed acid bath, it was revealed that 1)more thick film of the oxide was formed than formed in the H₂SO₄bath; 2) the abrasion and orrosion resistance of the film formed were inferior to those formed in the H₂C₂O₄bath, but much superior to those formed in the H₂SO₄bath; 3) the amount of dissolved Al was much smaller than that in the H₂SO₄bath, but a little greater than that in the H₂C₂O₄bath; 4) the coating ratio was the same as that in the H₂C₂O₄bath; 5) the dissolution of Al was inhibited than that in the H₂SO₄bath; and 6) in particular, the properties of the oxide formed at higher temperature was better compared to those formed in the H₂SO₄bath.
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