30MnB5 boron alloyed steel surface is coated using different coating techniques, namely 60(Ni-15Cr-4.4Si-3.5Fe-3.2B 0.7C)-40(WC 12Co) metallic powder plasma spray, Fe-28Cr-5C-1Mn alloy wire arc spray, WC-10Co-4Cr (thick) powder high velocity oxy-fuel (HVOF), and WC-10Co-4Cr (fine) diamond jet HVOF. The microstructure of the crude steel sample consists of ferrite and pearlite matrices and iron carbide structures. The intermediate binders are well bonded to the substrate for all coated surfaces. The arc spray coated surface shows the formation of lamellae. The cross-section of HVOF and diamond jet HVOF coated surfaces indicates the formation of WC, W2C Cr, and W parent matrix carbide structures. The corrosion characteristic of the coated steel has been investigated in 3.5 wt.% NaCl solution using electrochemical impedance spectroscopy (EIS), scanning electron microscope (SEM), and energy dispersive X-ray spectroscopy (EDAX) techniques. The results reveal that the steel corroded in the medium despite the coatings. However, the extent of corrosion varies. HVOF coated sample demonstrated the highest corrosion resistance while arc spray coated sample exhibited the least. EDAX mapping reveals that the elements in the coatings corroded in the order of their standard electrode potential (SEP). Higher corrosion resistance of HVOF coated sample is linked to the low SEP of tungsten.

Abrasion of cultivator equipment parts working in the soil causes serious losses if necessary precautions are not taken. The cultivator blades used to plow the soil in agricultural production wear out over time. In order to reduce this wear, the hardness and wear resistance of the material should be increased first. In this study, some of the 30MnB5 cultivator blades were heat-treated and some were coated with HVOF technique. The samples were obtained by plowing the soil at 15-cm working depth and 5.4-km[Formula: see text]h[Formula: see text] forward speed in two fields with different soil moisture contents. As a result of the experiments, abrasion losses and surface deformation of the blade material were observed and the effect of soil moisture on wear was also determined. After the treatment of 49.5[Formula: see text]daa (decare) with soil at 9% moisture content, the heat-treated 30MnB5 sample was worn 5.6 g, and the sample coated with WC–10Co–4Cr was worn 3.2[Formula: see text]g. Abrasions at 14% soil moisture were 6.3 g and 3.6[Formula: see text]g, respectively. It was observed that the coated material was less corroded than the heat-treated material. While the results obtained will contribute to the prevention of economic losses, the release of metals into the soil will also be prevented.

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In this research, it was aimed to reveal the agricultural mechanization characteristics of Karaman province between the years 2010-2020. With the help of the data obtained from the literature studies and the statistical calculations made, some agricultural mechanization level indicator values were found with the help of the number of tractors, combine harvester and agricultural machinery available in the province in the specified period. Data for 2010 and 2020, respectively; the average tractor power is 34.78 kW and 34.64 kW, the tractor power per cultivated area is 1.57 kW ha -1 and 1.31 kW ha -1 , the number of tractors per 1000 ha is 45.24 and 37.96, the number of combine harvester per 1000 ha is 0.42 and 0.47, per tractor areas of 27.40 and 27.66 hectares, 2365.00 hectares and 2096.77 hectares per harvester. The values calculated as a result of the study; the situation of the agricultural mechanization level of Karaman agriculture and the issues that need to be done for improvement are given by comparing the figures of the region and Turkey in general.

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