- 积分
- 723
注册时间2014-1-28
参与分
技术分
精华
TA的每日心情 | 衰 2014-4-19 19:10 |
---|
签到天数: 25 天 [LV.4]偶尔看看III
|
楼主 |
发表于 2016-3-19 22:15
|
显示全部楼层
本帖最后由 assab 于 2016-3-19 22:16 编辑
五、纯黑的诱惑——锆
锆金属可谓是最近最流行的金属柄材了。最近常有国内外的工匠用它做一些EDC的小玩具,如开瓶器、撬棍、刀坠之类。首先,先转一下百度百科上的资料。感谢原作者。锆(Zirconium)是一种化学元素,它的化学符号是Zr,它的原子序数是40,是一种高熔点金属,呈浅灰色。密度6.49克/立方厘米。熔点1852±2℃,沸点4377℃。化合价+2、+3和+4。第一电离能6.84电子伏特。锆的表面易形成一层氧化膜,具有光泽,故外观与钢相似。有耐腐蚀性,可溶于氢氟酸和王水;高温时,可与非金属元素和许多金属元素反应,生成固体溶液化合物。军事用途
从军工上来看,钢里只要加进千分之一的锆,硬度和强度就会惊人地提高。含锆的装甲钢、大炮锻件钢、不锈钢和耐热钢等是制造装甲车、坦克、大炮和防弹板等武器的重要材料。
从原子能和核能上来看,锆有突出的核能性,是发展原子能工业不可缺少的材料,中国的大型核电站普遍都用锆材,如果用核动力发电,每一百万千瓦的发电能力,一年就要消耗掉20到25吨金属锆。一艘三万马力的核潜艇所用的锆合金作核燃料的包套和压力管,使用量即可达20至30吨。
锆是一种稀有金属,具有惊人的抗腐蚀性能、极高的熔点、超高的硬度和强度等特性,被广泛用在航空航天、军工、核反应、原子能领域。“神六”上使用的抗腐蚀性、耐高的钛产品,其抗腐蚀性能远不如锆,其熔点1600度左右,而锆的熔点则在1800度以上,二氧化锆的熔点更是高达2700度以上,所以锆作为航空航天材料,其各方面的性能大大优越于钛。
wufan2000cs前辈也做过介绍:
http://www.knifriend.com/forum.php?mod=viewthread&tid=957233
从前辈们的介绍中我们可以知道,锆的优点是耐磨性好,漂亮且耐腐蚀。同时,它的韧性也很好。它能被抛光,喷砂和石纹处理。不过,它的手感还是一如金属的冰凉。而且加工难度相当大。atwood如是说:
"Today I havesome truly exotic P15 Prybabies to offer you. These are made of 702 Zirconium!I was recently offered a small piece of this material so I could not resisttrying a few tools with it. We go from 1/4 inch Roid thickness back to 1/8 inchSummer Weight on these but they are still way cool... The strength appears tobe just fine for a light duty tool but I would use some common sense beforetaking a hammer to it or a "cheater" bar.
Zirconium isdescribed in the literature as having a high affinity for oxygen and man ohman, is that ever the truth! Titanium is hardly easy to work with either butthis Zr stuff is just plain nasty to grind. It requires very slow speeds andthat is why I am so grateful to have a good speed controller on my KMG grinderas I can get it down to a crawl. Pre-milling the large bevel before finishgrinding is a must to avoid conflagration. The sparks from titanium are veryflammable too but this Zr is downright hazardous. You have to keep an eagle eyeon the dust and keep the dust collection bucket flooded with water. But, onceyou are past that delicate stage it's not so bad with the rest of the finishingsteps.
Speaking offinishes, I had a little fun with these...Anyone could have made them dullblack by simply heating with a torch and rubbing them with oil. I decided totry a variety of techniques though to see what else I could come up with. Don'task me to repeat it because I'm not exactly sure at this point what all I didbut there were multiple steps involved including heat, electricity, tumbling,blasting and hand rubbing to arrive at what I think are some very unusual andsubtle looks ranging from rusty warm browns to light color tones."
大意如下(鄙人自己翻译,转载请注明出处):
今天我真的为你尝试了些有异国情调的P15 prybaby。它们可是用702锆做的!我最近得到了一小片锆材料,所以我情不自禁地试着用它做了一些小工具。我的这些工具从四分之一英寸厚度回到了八分之一英寸厚度,但它们还是很酷……它们的强度很适合做哪些用来干轻活的工具,但我在处理它们之前会为你解释一些常识。
在文学中,锆与氧气和人类有很强的亲和力,这是对的!钛很难磨,但Zr更难磨。它需要磨得速度很慢,所以感谢我的KMG砂带机,我可以磨得比蜗牛爬还慢。在初磨之前把大棱角磨好是十分必须的,因为要避免火灾。钛的火花是非常易燃的,但和它相比,锆是彻头彻尾的危险。你要保持警惕,保持集尘桶灌满了水。但是,一旦过了那种微妙的阶段,在完工后休息会让你感觉好很多。
总的来说,这还是有一点乐趣的…有些人为了使它氧化变黑,用油擦它,并用火炬加热。我决定尝试各种方法。不要问我会不会再做,因为现在我也不知道。但是我有很多步骤包括热、电、翻滚,爆破手擦等方式来让它看起来不寻常一些——比如说从生锈的暖棕色到亮色的转换之类的。
总之,锆对于那些对小折重心很在乎的刀友们和爱装13的刀友们,是完美的选择。图片来自wufan2000cs兄。感谢原作者。
|
评分
-
查看全部评分
|