钢构件能持续多久?- 江南体育网页版- - - - -地球科学堆江南电子竞技平台栈交换 最近30从www.hoelymoley.com 2023 - 07 - 10 - t01:41:50z //www.hoelymoley.com/feeds/question/18768 https://creativecommons.org/licenses/by-sa/4.0/rdf //www.hoelymoley.com/q/18768 5 钢构件能持续多久? john doe //www.hoelymoley.com/users/18531 2019 - 12 - 23 - t05:28:03z 2023 - 02年- 13 - t13:46:50z < p >人造钢构件能够像化石保存了数百万年,或腐蚀会消散?金属,如铝,不腐蚀容易吗? < / p > //www.hoelymoley.com/questions/18768/-/18770 # 18770 8 回答约翰钢铁工件能持续多久? 约翰 //www.hoelymoley.com/users/7080 2019 - 12 - 23 - t06:54:39z 2019 - 12 - 23 - t16:26:48z < p >简短的回答是否定的。< / p >

Most metals do not fossilize well, they are too reactive/water soluble. Metals are usually what is doing the fossilizing, dissolved metal in groundwater is being attracted to the electrical properties of organic material and filling in or swapping places with a porous material. You might have a stain left or some of the shape as a natural casting, but not material preserved. The exception might be in amber, but it could also be really bad: amber preservation is tricky chemistry, so I am not comfortable saying yes or no. Metal objects have good short term preservation but horrid long term preservation. there are some low reactivity metals that might survive like gold, but not as fossils. But even gold is water soluble over millions of years, so even that would require some unusual conditions.

//www.hoelymoley.com/questions/18768/-/18772 # 18772 1 答案由Michael Walsby钢铁工件能持续多久? 迈克尔Walsby //www.hoelymoley.com/users/17166 2019 - 12 - 23 - t11:38:52z 2019 - 12 - 23 - t11:38:52z < p >这完全取决于条件化石化和钢铁的类型。人肉通常不会持续很长时间,但是冰的人发现低温保存在奥地利阿尔卑斯山脉呆了5000年,会有另一个几千如果他没有被移除。恐龙蛋白质和DNA比被发现。< / p >

Iron doesn't last long in damp conditions unless it is alloyed with another metal. The best stainless steel artefacts could fossilise under the right, non-acidic conditions. Copper, silver, gold, platinum and several other metals have been found fossilised in their pure, metallic state, so it follows that artefacts made of these metals could fossilise. Iron-nickel fragments of the famous Barringer meteorite in Arizona have been fossilised under the crater for at least 50,000 years and will probably (apart from the bits that have been removed) stay there for millions of years longer in an almost pristine state.

Aluminium may not corrode as readily as iron, but it does corrode. Nevertheless, aluminium artefacts might fossilise under the right dry, non-acidic conditions, as there are plenty of even more remarkable examples of fossilisation known to science..

//www.hoelymoley.com/questions/18768/-/18778 # 18778 6 答案由施罗德钢铁工件能持续多久? 施罗德 //www.hoelymoley.com/users/18534 2019 - 12 - 23 - t19:23:26z 2019 - 12 - 23 - t19:23:26z < p >当我们谈论一个化石,我们通常不意味着保存对象,而是一个保留跟踪对象的,像在其他材料的印象。金属物品肯定会留下印象在周围材料,以及氧化物。所以在这个意义上他们可以很容易地离开化石。< / p > < p >钢铁工件其自我持续时期是否取决于金属的细节和它遇到化学和热条件。但在大多数情况下,活性铁和铝等金属反应了通过多种不同的腐蚀机制上市< a href = " https://tubingchina.com/Corrosion-mechanisms-in-stainless-steel-Tube.htm " rel = " noreferrer " > < / >。有一个很好的< a href = " https://tubingchina.com/Corrosion-Resistance-Table.htm " rel = " noreferrer " >表< / >腐蚀进展率的几个类型的合金钢。这包括Hastalloy,最耐腐蚀形式的钢因此常用于核电站。工业用,“优秀的耐腐蚀”每年不到0.1毫米的腐蚀过程。,通过100米的金属腐蚀速率要吃一百万年。Zinc-steal接触淡水腐蚀的速度至少< a href = " https://tubingchina.com/Corrosion-of-Zinc-Coated-Steel-in-Selected-Natural-Fresh-Waters.htm " rel = " noreferrer " > < / > 10毫米/年,这将迅速摧毁它在大时间尺度。

Another way of looking at it is that basically all iron on Earth is found in the form of iron oxide, so iron compounds do not tend to stay oxidized over large time scales. Similarly, aluminum reacts with oxygen rapidly and is hardly ever (but not never) found in nature as an elemental metal. Some surface treatments such as anodization can extend this time, but will eventually fail. Some elemental metals can be found in nature, which is an indication that under some conditions they could be found as fossils. These "native metals" particularly include copper, gold, silver and platinum-group metals (see link for a full list).

If, however, a reactive metal object is kept well away from oxygen and water it may last much longer. This is the case for satellites, although most satellites orbits are not entirely stable. The longest lasting may be those boosted into graveyard orbits; standard geosynchronous satellite graveyard orbit results in an expected orbital lifetime of millions of years. Objects on Mars stand a good chance of lasting for long time scales, since they are not exposed to air or water, and are kept cold with little thermal cycling. They are also likely to become buried in dust blown by the Martian wind. The Philae comet lander may be similarly preserved, though comets tend to crash into planets after a few million years. Similarly, several of the outer planet probes may last for extreme time scales since they will be in vacuum, cold, and safe from major collisions. In particular: Voyager 1 & 2, Pioneer 10 & 11, New Horizons. But these are continuously moving away from the solar system, so while preserved, won't leave any fossils to find.

In total, the answer appears to be eons, but few objects will find suitable conditions, and the best place to look will be on Mars.

//www.hoelymoley.com/questions/18768/-/18785 # 18785 1 答案由blacksmith37钢铁工件能持续多久? blacksmith37 //www.hoelymoley.com/users/8409 2019 - 12 - 25 - t03:10:16z 2019 - 12 - 25 - t03:10:16z < p >等厚钢压力容器与12“厚墙(不是很多但是有一些)必须离开一些“化石”的证据很长时间如果埋葬。有很多血管壁厚约6”。这些船只含有铬和钼所以比碳钢更耐腐蚀。和很高的建筑物是由复合列有许多钢筋(大约3“直径酒吧)包含在混凝土中。有证据表明他们很长一段时间。深井,4 + / -个人同心管道与墙约一英寸厚度包裹在水泥和部分埋英里进入岩石。等等等等。< / p > //www.hoelymoley.com/questions/18768/-/21061 # 21061 1 答案由bandybabboon钢铁工件能持续多久? bandybabboon //www.hoelymoley.com/users/3315 2021 - 04 - 05 - t02:20:29z 2021 - 04 - 05 - t06:05:35z < p >最好的机会如果氧化过程留下空心壳体可以成为另一种矿物的模具。麻烦的是,氧化亚铁蛋糕这么原始对象的边界是化学的和物理的模糊。< / p >

If you have alloys and zinc coatings and paint, that can aid against the blurring effect of rust, so a zinc or vanadium steel will give the mud and sand more time to become a fixed barrier against the steel.

There has to be a process which sends dissolved iron away from the steel object while sending a cementing chemical into the steel object. Some micro-organisms can perhaps cement the sediment around the steel fast enough that the steel can completely vanish after a million years and be replaced by iron pyrite/limestone. Ferrihydrite is also good for transporting iron away from the mold.

If there is lots of sulphur so that the bacteria can create iron-pyrite inside a sediment/plastic paint shell, then perhaps there will be a bacterial mat that can strongly photograph the steel.

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