Surface physicochemical and mechanical properties play an important role in the working life ofthe materials.For example, the improved pitting corrosion resistance of titanium sheet by
laser surfacer emelting can enlarge its application range in harsh environments [1]. The better wear resistance of cast iron with biomimetic surfa ceprocessed by laser led to the higher serve life
of vehicle brakes [2]. For die-casting tooling,thein-service life,to large extent,depends on the thermal fatigue resistance of materi-
als [3]. Due to the wide applications of steel and cast iron,many
traditional techniques have been carried out to improve their
surface properties,such as surface coating,electric plating,heat
treatment, vapor deposition process and lasertrans formation
hardening, etc.
Bionics has placed profound effects on the development of
materials science over the past 30 years.The unique,desirable
morphology and structure of animals and plants mainly come
from their evolution and adaption to the environment for millions
of years.It inspires development of materials science in many
aspects. For instance,Neinhuis and Barthlott studied surface
design of water-repellent,anti-adhesive and waxy leaves based
on 200 water-repellent plant species [4]. As a result,water-
repellent,self-cleaning or anti-adhesive materials were fabricated;
表面物理化学和机械特性在材料的使用寿命中扮演着一个重要的角色。例如，通过激光表面重熔技术改进钛薄板的抗耐点腐蚀性能，可以扩大其在恶劣环境中的应用范围[1]。以仿生表面激光加工增强铸铁的耐磨性，可以延长车辆制动器的使用寿命[2]。至于压铸模具的使用寿命则很大程度有赖于材料的热疲劳抗力[3]。鉴于钢和铸铁的广泛应用范围，许多传统技术被用于改进它们的表面特性，如表面镀膜、电镀、热处理、汽相沉积工艺及激光表面淬火工艺等等。
在过去的三十年里，仿生学对材料科学具有深刻的影响。几百万年来，动植物的独特、理想的形态学主要是来自于它们的演变和对环境的适应；这在很多方面激发了材料科技的发展。举个例子，Neinhuis和 Barthlott 通过研究200种憎水性植物表面结构的防水性、防粘连性及蜡质叶片，终于制造出防水、自洁或防粘的材料。
这个怎么和有道翻译一样啊....大神