SU1247731A1 - Method of quantitative estimation of efficiency of barrier coatings on surface of carbonic fibres - Google Patents
Method of quantitative estimation of efficiency of barrier coatings on surface of carbonic fibres Download PDFInfo
- Publication number
- SU1247731A1 SU1247731A1 SU853857717A SU3857717A SU1247731A1 SU 1247731 A1 SU1247731 A1 SU 1247731A1 SU 853857717 A SU853857717 A SU 853857717A SU 3857717 A SU3857717 A SU 3857717A SU 1247731 A1 SU1247731 A1 SU 1247731A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- fibers
- barrier coatings
- coatings
- barrier
- internal friction
- Prior art date
Links
Landscapes
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
Abstract
Изобретение относитс к способам оценки эффективности барьерных;покрытий на волокнах. Цель изобретени - повьппение точности определени эффективности барьерных покрытий. По спо- .собу измер ют внутреннее трение на двух типах волокон - с покрытием и без него. Оба типа волокон подвергают высокотемпературному окислению при пониженном давлении и измер ют внутреннее трение в волокнах. 1 табл. (Л ю фа ОЭThe invention relates to methods for evaluating the effectiveness of barrier coatings on fibers. The purpose of the invention is to increase the accuracy of determining the effectiveness of barrier coatings. By the way, internal friction is measured on two types of fibers - coated and non-coated. Both types of fibers are subjected to high temperature oxidation under reduced pressure, and the internal friction in the fibers is measured. 1 tab. (Lu fa oe
Description
Изобретение относитс к контролю и управлению технологией создани композиционных материалов, в частности дл контрол качества армирующих материалов, используемых при НИИ металлов, керамики, сплавов и т.п. в виде углеродных волокон с защитными покрыти ми.;The invention relates to the control and management of the technology of creating composite materials, in particular for controlling the quality of reinforcing materials used in scientific research institutes of metals, ceramics, alloys, etc. in the form of carbon fibers with protective coatings .;
Цель предлагаемого способа - повышение точности определени эффективности барьерных покрытий карбида кремни на единичных углеродных/волокнах .The purpose of the proposed method is to improve the accuracy of determining the effectiveness of silicon carbide barrier coatings on single carbon / fibers.
Измер ют внутреннее трение в исходных углеродных волокнах (УВ) и в волокнах с барьерным покрытием из карбида кремни , прошедших отжиг в вакууме 10 Па в течение 30 мин.Internal friction is measured in the original carbon fibers (HC) and in fibers with a silicon carbide barrier coating, which has been annealed in a vacuum of 10 Pa for 30 minutes.
Предварительно осуществл ют измерение низкочастотного внутреннего трени исходных УВ в вакууме - Ю Па затем вакуум понижаетс до и осуществл ют отжиг волокон в ухудшенном вакууме при Т 1300 К в течение 30 мин. После отжига вакуум вновь повышают до исходного значени The low-frequency internal friction of the initial HC in vacuum — Yu Pa is preliminarily measured, then the vacuum is reduced to and the fibers are annealed in a degraded vacuum at T 1300 K for 30 minutes. After annealing, the vacuum is again increased to the initial value.
УВHC
56 1056 10
-э-e
1 УВ + (0,25%)1 HC + (0.25%)
31 1031 10
3 УВ + (2%)3 HC + (2%)
32 1032 10
,33
4 УВ + (5%)4 HC + (5%)
49 7 1049 7 10
,-з, w
2 УВ + (1%)2 HC + (1%)
19 1019 10
- J- j
Как следует из представленньрс результатов , наибольшее значение коэфAs follows from the presentation of the results, the largest value
и провод т повторное измерение внутреннего трени .and re-measuring internal friction.
Аналогичным образом провод т измерени внутреннего трени в УВ с барьерным покрытием.Similarly, measurements of internal friction in HC with barrier coating are carried out.
Пример. Способ использовали дл анализа сплошности барьерных покрытий из карбида кремни на УВ. Содержание карбида кремни дл трех различных покрытий составл ло 0,25, 1,2,5 вес.%. Измерение внутреннего .трени проводили с помощью универсальной установки в вакуук1е 10 Па при 1300 К.Example. The method was used to analyze the continuity of silicon carbide barrier coatings on an HC. The content of silicon carbide for three different coatings was 0.25, 1.2.5 wt.%. The internal measurement of the diffraction was performed using a universal installation in a vacuum of 10 Pa at 1300 K.
Дл испытаний из жгута УВ отбирали единичные волокна диаметром 7 10 м. Вазова длина образцов составл ла м, что обеспечивало собственную частоту крутильных колебаний 1 Гц. Крепление образцов осзтцествл лось клеем на основе фенол- формальдегидной смолы.For testing, single fibers with a diameter of 7–10 m were selected from the HC bundle. The vase length of the samples was m, which ensured a natural frequency of torsional vibrations of 1 Hz. The fastening of the samples was sealed with a phenol-formaldehyde resin based adhesive.
Результаты измерений внутреннего трени исходных УВ и волокон с барь- ерными покрыти ми карбида кремни представлены в таблице.The results of measurements of the internal friction of the initial HC and fibers with silicon carbide barrier coatings are presented in the table.
110-- 10110-- 10
.-3.-3
0,980.98
58 1058 10
-3-3
0,930.93
0,050.05
48 1048 10
гзgz
0,160.16
0,840.84
58 1058 10
гзgz
0,140.14
0,860.86
55 -1055 -10
-3-3
0,650.65
0,340.34
фициента сплошности и будет вл тьс оптимальным дл данных покрытий.consistency and will be optimal for these coatings.
312А77314312А77314
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU853857717A SU1247731A1 (en) | 1985-02-08 | 1985-02-08 | Method of quantitative estimation of efficiency of barrier coatings on surface of carbonic fibres |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU853857717A SU1247731A1 (en) | 1985-02-08 | 1985-02-08 | Method of quantitative estimation of efficiency of barrier coatings on surface of carbonic fibres |
Publications (1)
Publication Number | Publication Date |
---|---|
SU1247731A1 true SU1247731A1 (en) | 1986-07-30 |
Family
ID=21163594
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU853857717A SU1247731A1 (en) | 1985-02-08 | 1985-02-08 | Method of quantitative estimation of efficiency of barrier coatings on surface of carbonic fibres |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU1247731A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107345883A (en) * | 2017-02-22 | 2017-11-14 | 浙江科技学院(浙江中德科技促进中心) | Ludox reinforces the intensive analysis device and method of a wide range of sand |
-
1985
- 1985-02-08 SU SU853857717A patent/SU1247731A1/en active
Non-Patent Citations (1)
Title |
---|
Гиммельфарб А.Ф., Шварцман С.Л. Современные методы контрол композиционных материалов. М.: Металлурги , 1979, 248. Килин B.C., Чередник Е.М., Щеглова Л.Н., Островский B.C., Дергуно- ва B.C. Стойкость против окислени углеродных волокон с защитньми покрыти ми. - Порошкова металлурги . 1975, № 2 (146), 47-66. * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107345883A (en) * | 2017-02-22 | 2017-11-14 | 浙江科技学院(浙江中德科技促进中心) | Ludox reinforces the intensive analysis device and method of a wide range of sand |
CN107345883B (en) * | 2017-02-22 | 2019-10-01 | 浙江科技学院(浙江中德科技促进中心) | Silica solution reinforces the intensive analysis device and method of a wide range of sand |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
Bryggman et al. | Contact conditions in fretting | |
SU1247731A1 (en) | Method of quantitative estimation of efficiency of barrier coatings on surface of carbonic fibres | |
CN109580149A (en) | A kind of aircraft engine duct local vibration monitoring method | |
Lutynski et al. | Fretting fatigue of Ti-6Al-4V alloy | |
Hurst et al. | The determination of fracture strains of growing surface oxides on mild steel at high temperatures | |
Sharpe et al. | Effects of rest time on fatigue crack retardation and observations of crack closure | |
Neyman et al. | Research on fretting wear dependence of hardness ratio and friction coefficient of fretted couple | |
Katsuyama et al. | Dynamic fatigue of optical fiber under repeated stress | |
SU1436059A1 (en) | Method of flaw detection in blades of turbomachines | |
Gonczy et al. | Impact fracture of ceramics at high temperature | |
SU1392447A1 (en) | Method of assessing properties of tool materials | |
Marci | Fatigue crack propagation threshold: what is it and how is it measured? | |
SU1317330A1 (en) | Method of determining adhesion strength of fibrous specimens | |
Ehihara | Researches on the Piston Ring | |
SU1278687A1 (en) | Method of determining operation properties of lubricating materials | |
SU917059A1 (en) | Method of checking lubrication oil servica properties | |
SU1293528A1 (en) | Method of diagnostic checking of bearing units | |
SU1714466A1 (en) | Method for determining coefficient of friction of materials | |
SU991145A1 (en) | Method of determination of polymer material modulus of elasticity and thermal linear expansion coefficient | |
SU1432390A1 (en) | Specimen for corrosion test of metals | |
SU1191615A2 (en) | Method of testing mock-up centrifugal pump | |
SU864036A1 (en) | Method of testing thermomechanical strength of metal-polymeric gearings | |
SU1462160A1 (en) | Method of measuring degree of wear hardening of surface layers of metals and alloys | |
RU1779834C (en) | Safety clutch | |
SU1296900A1 (en) | Method of determining long-term strength index of paper |