鈦金屬磷酸氟化成膜性質研究

Study on Properties of Phosphate-Fluorite Conversion Coating on Titanium Metal

高文顯(Wen-Hsien Kao) ； 黃金賜(Jin-Si Huang)

《建國科大學報》 29卷2期 (2010/01) Pp. 39-55

https://doi.org/10.6995/JCTU.201001.0039

摘要

化成膜(Conversion Coating)施用於鋁、鎂基材上作為抗腐蝕與增進塗層附著性上已被廣泛運用與研究。不同於此，以鈦金屬為基材的磷酸氟化成膜被我們進行一系列的研究，將試片浸入以磷酸三鈉(Na3PO4)、氟化鉀(KF)、氫氟酸(48%~56% HF)為處理溶液槽中，並對已形成的膜層結構作觀察。再將試片與鋁質金屬蜂巢以環氧樹脂預浸布結合成三明治結構後，對試片做滾筒剝離測試其膠合性能。
實驗結果顯示，溶液的濃度越高，浸泡時間越長，表面由吹砂處理而產生的尖銳情形會逐漸平滑且不再出現白色顆粒狀粉末。而經由滾筒剝離測試，結果顯示試片在經過兩階段處理後對環氧樹脂的膠合性能強度優於未經過處理以及處理後表面產生白色顆粒粉末的試片。

關鍵字

鈦金屬 ； 化成膜 ； 滾筒剝離測試

並列摘要

Conversion Coating has been used typically and researched widely for increase the corrosion resistance of aluminum or magnesium as a base for paint or other organic finishes. Different from this, the Phosphate-Fluorite conversion coating of Titanium metal was investigated by using different immersion conditions for their various properties. The 2 pieces specimen of Titanium metal would need to be immersed in the solution that contains Trisodium Phosphate (Na3PO4), Potassium Fluoride (KF), and Hydrofluoric Acid (48%~56% HF). And after complete treatment observe the surface morphology of coating. The 2 pieces specimen shall be bonded with one piece of honeycomb of aluminum into a sandwich structure by the prepreg epoxy base adhesive and that is for getting the adhesive resistance properties by the climbing drum peel test.
From the experimental results shown that the sharp surface, that caused by dry abrasive blasting, of the specimen could be gradually removed by immersed in the solution. Further to above-mentioned, either the longer immersed time or the higher concentration of the solution could get a better effect for removing the sharp surface and never found white particle on the specimen. The result of the Climbing Drum Peel test showed that the bonding strength for the specimen with treatment is superior to either the one without treatment or the more white particle on the surface of the specimen after treatment.

並列關鍵字

Titanium metal ； Conversion Coating ； Climbing Drum Peel test