1) laser enhancement and toughening
激光强韧化
2) laser enhanced
激光强化
1.
In this paper, experiments on pulse and continuous Nd~+_3:YAG laser enhanced brush plating (LEBP) Ni & n-Al_2O_3/Ni coating are put into practice.
结果表明:与普通电刷镀镀层相比,激光强化电刷镀镀层晶粒明显细化,其中镀层的晶粒尺寸减小了约5nm,且激光的连续性对Ni镀层晶粒尺寸的影响较大。
3) laser strengthening
激光强化
1.
Analysis of the temperature field induced by laser strengthening;
激光强化温度场的理论解析与实验论证
2.
The experimental research on the improvement of the abrasiveness of the half-steel material using laser strengthening technology;
激光强化改善半钢材料耐磨性的实验研究
3.
The transient stress analysis of the roll surface during laser strengthening;
辊面激光强化过程的瞬态应力分析
4) laser hardening
激光强化
1.
The laser hardening technique and cutting performance test of the wood-slicer's blade;
木材削片机飞刀激光强化工艺及切削性能试验
2.
Simulation and verification of the temperature field in laser hardening;
激光强化温度场的数值模拟与校验
3.
Application of laser hardening technology in drawing die
激光强化技术在拉深模的应用
5) laser transformation hardening
激光强化
1.
The experiment that 18Cr2Ni4W steels were treate d by carburizing and laser transformation hardening was carried out.
利用扫描电镜、透射电镜和图像分析仪 ,对 18Cr2Ni4W钢渗碳激光强化复合处理试样微观组织进行了较细致的研究。
2.
The experiment that 12CrNi3A steels were treated by carburizing and laser transformation hardening was carried out.
对12CrNi3A钢进行了渗碳激光强化复合处理研究。
3.
The experiment that 18Cr2Ni4W steels were treated by carburizing and laser transformation hardening was carried out.
对１８Ｃｒ２Ｎｉ４Ｗ钢进行了渗碳激光强化复合处理研究。
6) laser enhancement
激光强化
1.
Experimental study of influence of surface condition on laser enhancement of N80 tubing;
表面状态对N80油管激光强化影响的试验研究
2.
For the serious tubing and sucker rod bias wear in artificially lifted wells,the laser enhancement treatment of tubing inner wall is put forward to improve the anti-wear performance of tubing.
针对机采井管杆偏磨严重的油井,提出对油管内壁进行激光强化处理,以提高油管耐磨性能。
3.
The fine crystals resulted from the laser enhancement is attributed to the improvement of the wear resistance.
制备了激光强化电刷镀N i镀层,研究了其硬度和耐磨性,分析了激光强化电刷镀N i镀层耐磨性增加的原因。
补充资料：半导体激光泵浦的激光晶体
半导体激光泵浦的激光晶体
LD pumped laser crystal
半导体激光泵浦的激光晶体LD PumPed lasercrystal适用于半导体二极管作泵浦源的激光晶体。传统的固体激光器一般用闪光灯泵浦，由于闪光灯的发光区域宽，只有一部分能量被吸收后转换成激光，大部分转换成热量，使工作物质温度上升，恶化了输出激光束的质量。半导体激光器输出的激光谱线窄(一般为几纳米)，选择合适的半导体激光器，使其激光光谱与某种固体激光材料的吸收光谱匹配，即可达到高效泵浦，大大减轻固体工作物质的热负荷。 因为半导体激光器光泵区域小，需用的晶体尺寸也小，因此要求基质晶体内可掺入的激活离子浓度要高，且不产生浓度碎灭。此外，要求与光泵的半导体激光波长相匹配的晶体的吸收带要宽，吸收系数要大;要有低的阑值功率;Q开关运转时，荧光寿命要长。当泵浦光源从闪光灯改变为半导体激光二极管时，对被泵浦的激光晶体产生了不同的要求。用闪光灯泵浦时，对材料的热性能和机械性能有严格要求，而半导体泵浦则更注重材料的光谱性能。 在已使用的激光晶体中，掺钱石榴石(Nd:YAG)晶体的阑值功率低，光学质量高，是应用于半导体激光光泵的固体激光器的主要材料。由于Nd3+离子在基质晶体中受分凝系数的限制，Nd3+离子浓度不能太高，所以一些氟化物和钨、钥酸盐晶体等掺杂浓度高，激光效率高，荧光寿命长，有可能成为半导体激光泵浦的后选晶体。 用半导体泵浦可制成效率高、功率和频率稳定、激光束质量好、寿命长的全固化激光器，并经各种频率转换技术，可发展成各种波长、各种模式、各种运转方式的激光器，这种激光器将在很大范围内取代已有的各类固体、液体和气体激光器。 (沈鸿元)
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条