| 摘要 |
<p>Methods are provided for coating a zirconia film that can reduce or prevent the occurrence of thermal fatigue cracks of a cylinder head of a diesel engine. The invention also relates to spray coat application of a zirconia composition onto an aluminium surface or part of a motor vehicle. Preferred methods of the invention include spray coating to form a zirconia film wherein the phase of the thin zirconia film is preferably formed in a tetragonal phase with semi-stability, and the morphological change of the coating layer into a monoclinic phase can result in absorption of crack stress, i.e. crack energy, which can lead to increased resistance in preventing crack propagation.</p> |
