DE1954480C - Process for depositing a boron coating on a carbon fiber - Google Patents
Process for depositing a boron coating on a carbon fiberInfo
- Publication number
- DE1954480C DE1954480C DE1954480C DE 1954480 C DE1954480 C DE 1954480C DE 1954480 C DE1954480 C DE 1954480C
- Authority
- DE
- Germany
- Prior art keywords
- fiber
- carbon fiber
- boron
- carbon
- coating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 229920000049 Carbon (fiber) Polymers 0.000 title claims description 22
- 239000004917 carbon fiber Substances 0.000 title claims description 22
- 229910052796 boron Inorganic materials 0.000 title claims description 19
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 title claims description 15
- 239000011248 coating agent Substances 0.000 title claims 10
- 238000000576 coating method Methods 0.000 title claims 10
- 238000000034 method Methods 0.000 title claims 2
- 238000000151 deposition Methods 0.000 title 1
- 239000000835 fiber Substances 0.000 claims description 16
- -1 boron halide Chemical class 0.000 claims description 5
- 229910052739 hydrogen Inorganic materials 0.000 claims description 5
- 239000001257 hydrogen Substances 0.000 claims description 5
- UFHFLCQGNIYNRP-UHFFFAOYSA-N hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 3
- 239000002244 precipitate Substances 0.000 claims description 3
- 239000007789 gas Substances 0.000 claims 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims 6
- 229910052799 carbon Inorganic materials 0.000 claims 6
- 238000007789 sealing Methods 0.000 claims 3
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims 3
- 229910052721 tungsten Inorganic materials 0.000 claims 3
- 239000010937 tungsten Substances 0.000 claims 3
- 229910052751 metal Inorganic materials 0.000 claims 2
- 239000002184 metal Substances 0.000 claims 2
- 239000000203 mixture Substances 0.000 claims 2
- 101710028361 MARVELD2 Proteins 0.000 claims 1
- 150000001638 boron Chemical class 0.000 claims 1
- 239000007795 chemical reaction product Substances 0.000 claims 1
- 239000004744 fabric Substances 0.000 claims 1
- 230000002349 favourable Effects 0.000 claims 1
- 238000003197 gene knockdown Methods 0.000 claims 1
- 150000002431 hydrogen Chemical class 0.000 claims 1
- 230000001771 impaired Effects 0.000 claims 1
- 238000009114 investigational therapy Methods 0.000 claims 1
- 230000001788 irregular Effects 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 claims 1
- 239000000463 material Substances 0.000 claims 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 claims 1
- 229910052753 mercury Inorganic materials 0.000 claims 1
- 238000001556 precipitation Methods 0.000 claims 1
- 229910052904 quartz Inorganic materials 0.000 claims 1
- 239000010453 quartz Substances 0.000 claims 1
- 230000000268 renotropic Effects 0.000 claims 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims 1
- 239000002131 composite material Substances 0.000 description 1
- FAQYAMRNWDIXMY-UHFFFAOYSA-N trichloroborane Chemical compound ClB(Cl)Cl FAQYAMRNWDIXMY-UHFFFAOYSA-N 0.000 description 1
Description
wurde das Volumenverhältnis zwischen Borhalogenid (Bortrichlorid) und Wasserstoff im oberen Bereich des Reaktors bei 1/2,5 und im unteren Bereich des Reaktors bei 1/1,6 gehalten.the volume ratio between boron halide (boron trichloride) and hydrogen was in the upper range of the reactor at 1 / 2.5 and in the lower region of the reactor at 1 / 1.6.
Auf einer Kohlenstoffaser von 25,4 Mikron Stärke wird beispielsweise ein Borniederschlag von 15,24 Mikron erzeugt, so daß die Gesamtfaser eine Stärke von 55,88 Mikron erhält. Der Borniederschlag einer solchen Faser besitzt eine durchschnittliche Zugfestigkeit von über 42200 kg/cm* und die zusammengesetzte Faser eine durchschnittliche Zugfestigkeit von 31 600 kg/cm2. Die Dichte der Bor-Kohlenstoffaser beträgt 2,25 g/cm3, der Elastizitätsmodul des Borniederschlages 4,22 · 10« kg/cm*.For example, a boron deposit of 15.24 microns is produced on a 25.4 micron carbon fiber so that the total fiber is 55.88 microns thick. The boron precipitate of such a fiber has an average tensile strength in excess of 42,200 kg / cm * and the composite fiber has an average tensile strength of 31,600 kg / cm 2 . The density of the boron-carbon fiber is 2.25 g / cm 3 , the modulus of elasticity of the boron precipitate is 4.22 · 10 «kg / cm *.
Hierzu 1 Blatt Zeichnungen1 sheet of drawings
Claims (6)
kennzeichnet, daß Kohlenstoffasern mit einem Bei dem erfindungsgemäßen Verfahren werden Durchmesser zwischen 12,7 und 50,8 Mikron ver- vorzugsweise Kohlenstoffasern mit einem Durchwendet werden, messer zwischen 12,7 und 50,8 Mikron verwendet.4. The method according to claim 1, characterized in that ge 20 tric current conduction through the fiber is heated,
indicates that carbon fibers with a diameter between 12.7 and 50.8 microns, preferably carbon fibers with a through, knife between 12.7 and 50.8 microns are used.
aus einer Borhalogenid-Wasserstoffatmosphäre auf Die Stopfen 24, 26 sind ferner an ihrem Umfang einer erhitzten Kohlenstoffaser niedergeschlagen. Da- mit einer Rille 38 versehen, die mit der Ausnehmung bei ergaben sich jedoch unregelmäßige, bambusartige 30 bzw. 32 in Verbindung steht und gleichfalls mit Knoten aus Bor rund um die Kohlenstoffaser, die Dichtungsmedium 34 gefüllt ist. Hierdurch wird der die Eigenschaften des Endproduktes wesentlich be- 55 Spalt zwischen dem Stopfen 24 bzw. 26 und der einträchtigen. Trotz umfangreicher Versuche war es Wandung des Gefäßes 12 abgedichtet,
bis zum Anmeldetage unbekannt, worauf diese Bor- Die Stopfen 24, 26 enthalten eine zentrale öffnung knoten beruhten und wie man sie vermeiden könnte. 44 bzw. 46, die groß genug ist, um die Kohlenstoff-Interessanterweise treten nämlich diese Knoten bei faser 50 hindurchzuführen, die jedoch andererseits BorUberzUgcn von Metallfasern nicht auf. 60 klein genug ist, um das Dichtungsmedium 34 durchIn an effort to replace the tungsten wire with a plug 24, 26 with a direct current source 36 using cheaper material, boron 50 has already been interposed with a potentiometer 56.
from a boron halide-hydrogen atmosphere. The plugs 24, 26 are further deposited on their periphery by heated carbon fiber. It is provided with a groove 38, which is connected to the recess at, however, irregular, bamboo-like 30 or 32 and is likewise filled with nodes made of boron around the carbon fiber, the sealing medium 34 is filled. As a result, the properties of the end product will be significantly impaired. Despite extensive attempts, the wall of the vessel 12 was sealed,
Until the filing date, it was unknown what this boron The plugs 24, 26 contain a central opening node were based on and how they could be avoided. 44 or 46, which is large enough to pass the carbon. Interestingly, these knots occur in fiber 50, which, on the other hand, do not occur as a boron coating on metal fibers. 60 is small enough to allow the sealing medium 34 through
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