Determining properties of nickel based composite that reinforced by electroless nicel plated boron nitride and astaloy-CrM powders

Industrial development brings with it the need for new materials every day. When it comes to obtaining more than one feature together, composite materials are at the forefront of the material groups. In composite materials, the main matrix and reinforcement element are defined and known according to the material group and the morphology of the reinforcement elements. Electroless nickel plating process is the chemical coating of nickel and its alloys on metal surfaces without using electric current by the immersion method. This process is also preferred in many areas in industrial applications for improving surface wear resistance of metallic and ceramic powders. These metallic and ceramic powders are used for reinforcement to production of nickel base composite in this study. For this purpose Ni coated (1.66% BN ceramic + 31.65% Astaloy-CrM metallic) + %66,67Ni nickel powders were shaped circularly in uniaxial cold press. These samples are sintered in conventional furnace with argon atmosphere at the temperature of 1000, 1100, 1200, 1300 and 1400 °C for two hours. The mechanical properties of Ni based electroless Ni plated ceramic and metallic powders reinforced composite samples were determined. In addition, the metallographic evaluation was carried out by XRD analysis and SEM (Scanning Electron Microscope) on the samples. Consequently, the highest density and hardness is obtained composite made from (1,66%BN + 31,65%Astaloy-CrM) + 66,67%Ni powders, It was sintered at temperature of 1400°C for two hour in tube furnace.In this study was supported by the 17 .KARIYER.162 project of Afyon Kocatepe University. I would like to thanks the A.K.U. Scientific Research Coordination Uni

Investigation of the production and mechanical properties of silicon carbide-reinforced composites

In this study, it was aimed to produce an intermetallic with low energy cost and better mechanical and physical properties with the microwave sintering method. Cupper matrix composites containing 4,8,12,16, and 20%SiC were fabricated by microwave furnace sintering at 1000°C, 1050°C, and 1100°C temperatures. Compounds formation between Cu–%10Cr and SiC powders was observed after sintering under Argon atmosphere. XRD, Scanning Electron Microscope, mechanical testing, and measurements were employed to characterize the properties of Cu + %10Cr ++4%SiC, Cu + %10Cr +8%SiC, Cu + %10Cr +12%SiC, Cu + %10Cr +16%SiC, and Cu + %10Cr +20%SiC composite specimens. The results of the test data applied to the samples were examined. For composite samples of Cu + 10% + 4% SiC composition at 1000 ° C, the hardness value was measured as 128 HV. The ceramic additive was made to increase the wear and corrosion resistance of the intermetallics

Incubation properties of native geese in turkey

Goose breeding is an important branch of breeding in many countries especially in the USA, China, Poland, France, Bulgaria, and Russia. In Turkey, goose production is performed in the Eastern Anatolia Region, especially in Kars and Ardahan provinces, Central Anatolia, and the Lakes Region is also a significant source for meeting families’ meat demand. This research was conducted to identify incubation properties of local geese raised in Afyonkarahisar. In this study, egg weight, shape index, fertilization range, incubation performance, and hatching power were determined. Data was collected from 100 geese eggs obtained from a goose flock that were in the first yield year in a private family business in Nuribey town, Afyonkarahisar. It was found that egg weight was 137.37±9.21g, shape index was 67.04±2.94%, fertilization rate was 72.00%, incubation performance was 58.00%, and hatching power was 80.55%. This study is important for the evaluation of goose potential in Afyonkarahisar region, it is possible to say that is a race that should be studied especially in terms of fertility rate, hatchability and hatching powerAfyon Kocatepe Üniversitesi, BAP

WC tabanlı sert malzemeler nasıl geliştirilir

Tungsten carbide is known to have excellent corrosion resistance and high hardness within carbide ceramics. Due to their superior mechanical properties and wear resistance, tungsten carbide cutting tools containing Co binder have been the subject of many studies. There are a limited number of works regarding the use of Ni and Fe as a binder in tungsten carbide based composites, especially processing with microwave radiation. In this study, a composite cutting tool made of electroless nickel coated tungsten carbide ceramic powder was produced by microwave sintering. Two different tungsten carbide powder sizes of 2 µm and 10 µm were used for the production of composite cutting tool. The microwave sintering was carried out at two different temperatures of 1200 and 1400 ° C for 2 hours. Characterization of composite cutting tools was made by XRD, hardness, compression test and electron microscopy techniques.Tungsten karbür seramikler içerisinde mükemmel korozyon direnci ve yüksek sertliğe sahip olduğu bilinmektedir. Üstün mekanik özellikleri ve aşınma direncinden dolayı, Co bağlayıcı içeren tungsten karbür kesici takımlar birçok çalışmaya konu olmuştur. Tungsten karbür esaslı kompozitlerde, özellikle mikrodalga radyasyonu ile işlem yapan, Ni ve Fe'nin bağlayıcı olarak kullanımıyla ilgili sınırlı sayıda çalışma vardır. Bu çalışmada, elektriksiz nikel kaplı tungsten karbür seramik tozundan yapılmış bir kompozit kesici alet mikrodalga sinterleme ile üretildi. Kompozit kesici alet üretiminde 2 farklı tungsten karbür toz büyüklüğü 2 µm ve 10 µm kullanıldı. Mikrodalga sinterleme, 2 saat boyunca iki farklı 1200 ve 1400 ° C sıcaklıkta gerçekleştirildi. Kompozit kesici aletlerin karakterizasyonu XRD, sertlik, sıkıştırma testi ve elektron mikroskobu teknikleri ile yapılmıştı

Sintering and characterization of SiC reinforced Ni powders in microwave furnace

In this study, SiC reinforced nickel matrix composites, microwave at different temperatures It is produced by sintering in oven. Nickel deposition on SiC powders was achieved by using electroless nickel plating technique. It is sintered at temperatures between 500°C, 600 °C, 700°C, 800°C and 900°C under Ar atmosphere. XRD, SEM (Scanning Electron Microscope), pressure test and hardness measurements were used to characterize the properties of sintered samples in microwave furnace. The experimental results, maximum compressive strength (σmax) and hardness (HV) were carried out at 800 °C. Microwave sintering of Ni-coated SiC powders without electric current can be a promising technique for producing ceramic-reinforced nickel composites.TUBITAK due to its contributions to this study with project no. 106T744

Investigation of mechanical properties of boronized composites produced by electroless Ni coating

In this study, ceramic-metal composite production and characterization have been made in order to increase the service life of plotter tools used in soil industry. In the study Ni coated (36% AlN + 3% WC) powders were circularly shaped in uniaxial hydraulic press. These samples were sintered at 1000-1100-1200-1300-1400 °C with argon atmosphere in conventional furnaces. The highest hardness value of 112.9 Hv was obtained in the composite samples (36%AlN + 3%WC) at 1400 °C. Powder metallurgy was applied to ceramic-metal composites by using box boring in dry air atmosphere at 950 °C for 4 hours. The samples were characterized by mechanical and metallographic examination. After box boronization, hardness values were measured, their densities were calculated, the current phases were determined by X-ray diffraction (XRD) method and microstructures were examined by scanning electron microscopy (SEM). The highest hardness value of 1150.80 Hv was sintered at 1400 ° C and 61% Ni was obtained in the box boron composite sample (36% AlN + 3% WC). Better mechanical and metallographic results were obtained from the samples by using box boring method. The porosity decreased in the microstructure examination of the sample. Considering the advantages of non-electric Ni coating method in sintering, it can be said that improving mechanical properties is a good method. Boronizing process was effective in reducing surface porosity and increasing surface hardness up to 10 times

Production of Co-Cr-Ti composite and investigation of mechanical properties

Intermetallic materials such as Co2Ti, Cr2Ti are among advanced technology materials that have outstanding mechanical and physical properties for high temperature applications. Especially creep resistance, low density and high hardness properties stand out in such intermetallics. The microstructure, mechanical properties of %64Co– %32Cr and %4Ti powders were investigated using specimens produced by tube furnace sintering at 800–1200 C temperature. A composite consisting of ternary additions, a metallic phase, Ti, Cr and Co have been prepared under Ar shroud and then sintered in tube furnace. XRD, scanning electron microscope, were used to characterize the properties of the specimens. Experimental results carried out for composition %64Co–%32Cr–%4Ti at 1200 C suggest that the best properties as 182.09 HV and 5,584 g/cm3 density were obtained at 1200 C

Production of ni3al-cr composite and investigation of mechanical properties

Nickel aluminide intermetallic compounds possess attractive properties that make them good candidates for high temperature structural applications. It is known that Ni3Al intermetallics are commonly used in various application fields with the addition of Cr, in particular as well as elements such as Ti, Co, Mo and Fe which are related to this group for improving properties thereof. Given this information, sintering process was used in this study by adding different amounts of Cr powder to Ni3Al powder mixture. When the properties of the sample after sintering were examined we were able to reveal the effects of Cr on Ni3Al and consider 3% Cr added compositions as the most suitable ratio in terms of mechanical properties. Analyses were conducted metallographically on the samples after sintering, the densities were calculated, hardness and shear strengths were determined. According to the data 3% Cr adde

Production of ni3al-fe composite and investigation of mechanical properties

In intermetallics high resistance to creep and oxidation, high strenght, low density are desired properties. Sintering process was used in this study by adding different amounts of Fe powder to Ni-Al powder mixture. When the properties of the sample after sintering were examined 40% weight Fe added composition was found as the most suitable ratio in terms of mechanical properties. Analyses were conducted metallographically on the samples after sintering, the densities were calculated, hardness and shear strengths were determined. According to the data 40% Fe added composition had 5,82 gr/cm3 of density, 92,8 HB hardness values and displayed 221 MPa shear strength