抄録
In the present work, there are pursued operating conditions of Taber Abrasion Tester to evaluate the wear resistance of anodic oxide films on aluminum.
It was observed that the abrasive wheel siutable for this experiment was resilient type CS-17, and all the wheels of resilient type were composed of α-Al2O3 by X-ray diffraction method. The applied load of 1, 000g was essential to measure the weight loss by abrasion. When a specimen was abraded through 2, 000 turns of the wheel before the main measuring, the refacing was not necessary during the test. However, when the specimen was replaced with a new one, the refacing was necessary to remove the effect of clogging of foreign particles on the wheel. The weight loss of each specimen was evaluated after 15, 000 turns.
In the next stage, the wear resistance of anodic oxide films on aluminum was tested with Taber Abrasion Tester by keeping the conditions of operation mentioned above.
Each specimen in the above test was anodized under the following conditions:
Electrolyte composition sulfuric acid 100g/l
and oxalic acid 15g/l
Electrolysis time 45min.
Current density 1, 2, 4, 6, and 8amp./dm2
Bath temperature -5, 0, 5, 10, and 20°C
The results of these tests were as follows. The anodic oxide films formed at a lower bath temperature and under a higher current density proved to have higher wear resistance as expected. The change in current density had little effects on the wear resistance at a lower temperature.
